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Re: Haiku XP-G

Originally Posted by McGizmo

The Nichia is being driven at 300 mA on high (AA converter) VS the 660 mA on high of the XPG and since the XPG is likely higher in flux, half the lumens from the Nichia compared to XPG is what I would expect. The Nichia is most likely a 119 which has a smaller die than the 119V or the XPG.

Now that I know what LED is in this head, maybe I'll consider swapping out the engine for the XML one that I picked up a while back. Can someone please advise the proper method to order an XML reflector from Don? Also, any concerns about my doing this swap myself?

Re: Haiku XP-G

Originally Posted by jkid1911

Now that I know what LED is in this head, maybe I'll consider swapping out the engine for the XML one that I picked up a while back. Can someone please advise the proper method to order an XML reflector from Don? Also, any concerns about my doing this swap myself?

Re: Haiku XP-G

Concerning the LEDs: I would consider offering the Nichia 219C (Datasheets: cool-white and warm-white). It is the third generation "219" LED with an even higher efficiency. It has the same footprint as as older 219s and all the Cree XP-LEDs. It is available with and without high-cri (the 90CRI version will be available soon). Is has a much, much lower Vf compared to the XP-G2. In terms of lumens/watt the 5700K 70CRI version is more efficient than the cw XP-G2 S4.

The new XP-G3 is more efficient than all of them, but it has a lot of problems. When using reflectors the tint is not uniform across the beam (blueish spot, yellow spill).

Re: Haiku XP-G

Re: Haiku XP-G

Originally Posted by The_Driver

Concerning the LEDs: I would consider offering the Nichia 219C (Datasheets: cool-white and warm-white). It is the third generation "219" LED with an even higher efficiency. It has the same footprint as as older 219s and all the Cree XP-LEDs. It is available with and without high-cri (the 90CRI version will be available soon). Is has a much, much lower Vf compared to the XP-G2. In terms of lumens/watt the 5700K 70CRI version is more efficient than the cw XP-G2 S4.

The new XP-G3 is more efficient than all of them, but it has a lot of problems. When using reflectors the tint is not uniform across the beam (blueish spot, yellow spill).

I've used a 4000K 219C in a Haiku and Mule. Not bad but the hotspot in the Haiku was kind of weird, the peripheral of the hotspot was a different tint/intensity to the centre? It was powerful and threw well, only noticed the odd spot white walling.
Put a 5000K XPG3 Hi CRI behind a biggish smooth reflector and it was horrible, but behind a Ledil boom it's actually pretty nice. Haven't put one in a McGizmo.
Latest mod, XML2 U2 3D (reflowed from stock XML) into a Haiku after swapping XP to XR reflector. Nice tint but I'm sold on the 119 (V) or XPG2.
I can't see Don mixing it up here, he has his system and ways. I certainly can't disagree with him and think his LED selection is spot on really.